A duplex riverbed environment system based on ecological flow velocity

Abstract

The invention relates to the field of ecological restoration of rainwater-type river water bodies, in particular to a compound riverbed environment system based on ecological flow velocity. Including a dry season ecological trough, a river course revetment covered with a river course base floodplain, and a river course revetment constructed in the form of the river course. For the foot protector for preventing erosion and fixing the bank, the floodplain surface is mixed with a floodplain water purification layer, and the dry season ecological trough is constructed by digging under the floodplain. According to the hydraulic characteristics of the aquatic organisms inhabiting the river, on the basis of defining the ecological flow rate suitable for the organisms, construct the river passage habitat in the dry season, and improve the hydrodynamic conditions of the rivers in the dry season of sewage interception and drainage, so as to ensure the habitat environment of the river aquatic organisms in the dry season. Meet the needs of aquatic organisms for survival and reproduction in dry seasons, induce the restoration of river ecological functions, and improve river biodiversity and stability.

Description

technical field [0001] The invention relates to the field of ecological restoration of rainwater-type river water bodies, in particular to a compound riverbed environment system based on ecological flow velocity. Background technique [0002] Urban rainfall-type rivers have large differences in flow between high and dry seasons, and lack of ecological base flow. After sewage interception and discharge, the tail water of sewage treatment plants is usually used as a supplementary water source. However, the actual water supply cannot meet the ecological water demand of the river, resulting in rainfall-type rivers in high and dry seasons. Ecological water imbalance, insufficient hydrodynamic conditions in the dry season, and lack of water ecological functions. [0003] Existing river construction methods mainly consider the safety of river flood discharge, but fail to fully consider the water ecological function of the river and the habitat conditions of aquatic organisms, and a...

AI Technical Summary

Problems solved by technology

[0002] The flow rate of urban rain-source rivers varies greatly in wet and dry seasons, and the ecological base flow is scarce. After the sewage is intercepted and discharged, the tail water of the sewage treatment plant is usually used as a supplementary water source. Ecological water imbalance, insufficient hydrodynamic conditions in dry season, and lack of water ecological functions

[0003] The existing channel construction method mainly considers the flood safety of the channel, but fails to fully consider the water ecological function of the river and the habitat conditions of aquatic organisms, and does not take into account the coordinated purification of non-point source pollution, resulting in the degradation of water ecological functions and the habitat degradation of aquatic organisms. Damage, rainy season rain and sewage mixed flow pollution impact and other multiple threats

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